Metal-sawing apparatus.



N0. 703,946. Patented July I l902.

C. '0. MORGAN. METAL SAWINGAPPARATUS.

v (Application filed A i. 3, 1902.

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Nu. 7o3,'9= i6; Patentpd July I, [902 c. 0. momma. METAL SAWINGAPPARATUS. (Application filed Apr. 8, 1902.

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UNITED STAT S PATENT OFFICE.

CHARLES O. MORGAN, OF REDWOOD FALLS, MINNESOTA.

METAL-SAWING APPARATUS.

SPECIFICATION forming part of Letters Patent No. 703,946, dated July 1,1902. Application filed April 3, 1902. Serial No. 101,264. (No model.)

T0 (0 whom it may concern.-

Be it known that LCHARLES O. MORGAN, a citizen of the United States,residing at Redwood Falls, in thecounty of Redwood and State ofMinnesota, have invented new and useful Improvements in Metal-SawingApparatus, of which the following is a specification.

My invention relates to metal-sawing apparatus, the same beingparticularly designed for the purpose of sawing metallic bars,tubes, andthe like.

The object of the invention is to provide'a hand-operated machine ofthiskind by means of which the work of cutting a metallicbar or tube maybe neatly, rapidly, and effectively performed. 1

Other objects of the invention will hereinafter appear, and the novelfeatures thereof will be set forth in the claims.

In the drawings forming part of this specification, Figure 1 is a planView of a metalsawing machine constructed in accordance with myinvention. Fig. 2 is a vertical section of the same on the line 2 2 ofFig. 1. Fig. 3 is a similar section on the line 3 3 of Fig. 1. Fig. 4 isa section on the line 4 4 of Fig. 1, and Fig. 5 is a detail view of thework-table.

Like reference-numerals indicate like parts in the different views.

The base or framework 1, on which the operative parts of my machine aremounted, is preferably made from a single casting, which may be boltedor otherwise secured to a table or other support. however, be otherwisecohstructedfif desired. The said base or framework'l has secured theretoor formed integral therewith the uprights or standards 2 2, in which ismounted for rotation a saw-shaft 3, having a circular saw 4, of anysuitable or preferred construction, secured to one end thereof. Theopposite end of the shaft 3 is provided with a beveled pinion 5. Alsosecured to or formed integral with the base or framework 1 are theuprights 6 6, in which is mounted to turn a drive-shaft 7, having abeveled pinion 8 on one end thereof, which meshes with the pinion 5 onthe shaft 3, and having an operating crank or handle 9 on the endthereof opposite the pinion 8. The shafts 3 and 7 are set Said frameworkmay,

at an angle to each other; but through the pinions 5 and 8 the shaft 3,and consequently the saw 4 thereon, is driven from the shaft 7. Securedto or formed integral with the base 1 are the parallel rails orguideways 10, the same extending parallel to the plane of the saw, 4, asshown. These rails 10 are preferably produced by flanges struck up fromor cast on the base 1, the upper edges of the same lying in the sameplane with each other, and by preference in a horizontal plane.Slidingly mounted upon the rails 10 is a feed or work table 11, the samebeing formed with depending flanges 12, which overlap the sides of therails 10'. The upper surface of the table ll is provided with alongitudinally-extending depression 13, through the bottom wall of whichis cut an elongated slot 14, slightly narrower than the depression 13and forming shoulders or ledges 15 on opposite sides thereof. Extendingthrough the slot 14 is a pin16, secured to a post 17, extending upwardlyfrom the base 1, the upper end of said pin being screw-threaded toreceive a nut 18, the said nut 18 holding in'place a washer 19, whichbears against the shoulders orledges15. Theconstructionjustdescribed isprovided for the purpose of holding the ta- 1 ble 11 down upon the rails10, with provision for sliding movement of said table on said rails. Ido not, however, limit myself to this exact construction, as it isobvious that other means may be provided for accomplishing the sameresult.

Formed in the upper surface of the table 11 is a transversely-extendinggroove or depression 20 for the reception of the work to be operatedupon. The Work is retained in operative position in said groove by meansof a clamping-jaw 21, which is pivoted at one end to the table 11. Toprovide for the pivotal connection between the table 11 and the jaw 21,1form upon said table the upwardlyextending lugs or ears 22 and form uponsaid jaw the downwardly-extending lugs or ears 23. These ears areperforated for the reception of a pivot pin or bolt 24. The free end ofthe clamping-jaw 21 is normally urged upwardly or away from the table 11by means of a coil-spring 25, which is interposed between these twoparts, the lower end of the same being seated in a socket 26 in thetable 11 and the upper end thereof being seated in a socket 27 in thejaw 21. The said jaw is moved, however, to its clam ping position andheld in such position by means of the bolt 28, having a thumb-nut 29 onits free end. The said bolt 28 extends through an opening 30 in thetable 11, the head 30 of said bolt bearing against the under side ofsaid table. The said bolt passes through the opening 31 in theclamping-jaw 21, and the winged thumbnut 29 fits upon said bolt abovethe clamping-jaw 21 and when screwed downwardly is adapted to engagesaid clamping-jaw for forcing the free end thereof into its depressed orclamping position.

Longitudinal movement may be imparted to the table 11 in eitherdirection by means of an operating-lever, 32, fulcrumed at its lower endto the base 1 and connected through the link 33 with the table '11. Bymoving the free end of said lever forwardly or rearwardly acorresponding movement will be imparted in an obvious manner to thetable 11 and the parts carried thereby. I

In the operation of my device the metallic bar or tube to be cut isplaced within the groove 20 in the upper surface of the table 11, withone end thereof projecting beyond the side of said table which liesadjacent to the saw 4. The clamping-jaw 21 is then moved to its clampingposition by screwing the winged nut 29 downwardly on the threaded bolt28. The bar or tube is thereby firmly clamped to the table 11 againstdanger of accidental displacement. The crank 9 is now turned by one armof the operator to cause the rotation of the saw 4. At the same time thefree end of the operating-lever 32 is grasped by the hand of the otherarm of the operator and moved forwardly. This action by the connectionsabove described causes a corresponding movement to be imparted to thetable 11, with the result that the work carried thereby is fed to thecutting edge of the saw 4. Such a degree of pressure is applied to thelever 32 as is necessary or requisite to keep the work and saw inoperative relation to each other and to produce a smooth even cutthrough the material operated upon. There is no danger of varying theposition of the work with respect to the plane of the saw 4, andconsequently a perfectly smooth and even cut may be produced.Furthermore, there is no danger of vertical displacement of thework-table 11, as the same rests upon and is guided by the rails and isprevented from upward movement by the engagement of the washer 19 withthe elongated shoulders or ledges on opposite sides of the slot 14:.When the saw 4: has completed the severance of the metallic tube or baroperated upon, the table 11 may be retracted to its normal position bymerely reversing the movement of the lever 32. To nnclamp the tube orbar from the work-table 11, it is merelynecessary to unscrew the wingednut 29, when the spring will act to elevate the freev end of theclamping-jaw 21, so as to move the same away from the table 11.

The washer 19, heretofore referred to, is a spring-washer, the samebeing constructed from sheet-steel, dished on its under side and bearingaround its edges on the ledges or shoulders 15 and acted upon at itscenter by the nut 18. The said washer, in connection with the partswhich cooperate therewith, serves to hold the work-table 11 in yieldingcontact with the rails 10, so that said table may be operated with aneasy soft elastic movement on said rails. The use of said washerovercomes the necessity of having the bearing-surfaces of the ledges 15,as well as the under surface of. the table, which rests upon the rails10, and also the tops of the rails, milled, machined, or planed. Thiswould be necessary if the spring-washer referred to were not employed,thereby greatly adding to the cost of manufacture of the machine.

' It has been heretofore stated that the drive or crank shaft 7 is setat an angle to the sawshaft 3. The object of this construction is notonly to enable the crank 9 and the operating-lever 32 to be readilygraspedby an operator, but it also enables the metallic bar or tubebeing cut to extend for an indefinite distance parallel to the shaft 3without interfering with the operation of the crank 9. If said crankwere formed directly on the shaft 3 or if the shaft '7 extended in linewith said shaft 3, the metallic bar or tube being operated upon wouldinterfere with the rotation of said crank.

Having now described my invention, what I claim as new, and desire tosecure by Letters Patent, is j 1. In a sawing-machine, the combinationwith a base or framework having upwardlyextending parallel railsthereon, a saw-shaft at right angles to said rails and a saw carriedthereby, of a longitudinally-movable worktable mounted upon said rails,having depending flanges which bear against the sides of said rails forpreventing lateral movement of said table, and having an elongated slottherein, a support secured'to said base between said rails, a projectionupon the upper end of said support extending through said slot, and aspring-washer upon the upper end of said projection engaging the upperside of said table, as and for the purpose set forth.

ICC

2. In a sawing-machine, the combination with a base or framework, havingupwardlyextending parallel rails thereon, a saw-shaft at right angles tosaid rails, and a saw carried thereby, of a longitudinally-movableworktable,mounted upon said rails,havingdepending flanges thereon, whichbear against the sides of said rails for preventing lateral displacementof said table and having a longitudinal depression therein provided withan elongated slot in its bottom wall forming ledges or shoulders, asupport secured to said base between said rails, a projection on the ingflanges thereon which bear against the sides of said rails forpreventing lateral displacement of said table, and having a longitudinaldepression therein provided with an elongated slot in its bottom wallforming ledges or shoulders, a support secured to said base between saidrails, a projection on the upper end of said support extending throughsaid slot, a spring-washer surrounding said projection and bearingagainst said shoulders or lodges, and a nut upon the upper end of saidprojection, as and for a purpose set forth.

4. In a metal-sawing machine, the combination with a base having twosets of uprights thereon, of a saw-shaft mounted to'turn in one set ofsaid uprights having a saw upon one end and a pinion upon the other, adriveshaft mounted to turn in the other set of said uprights, set at anangle to said saw-shaft and having a pinion on one end meshing with thepinion on said saw-shaft,and a crank on the other end, a pair of railssecured to said base, a work-table mounted to slide on said rails, meansfor clamping the work to said table, an operating-lever fulcrumed tosaid base, and a link connecting said lever with said Work-table formoving the same longitudinally toward and away from said saw.

In testimony whereof I have hereunto set my hand in presence of 'twosubscribing wit- IIGSSBS.

CHARLES O. MORGAN. Witnesses:

CHARLES H. KENNEY, GEORGE L. EVANS.

